Home / 3,936.08-5,428-2,589.28

Finding the Fourth Proportional to 3,936.08, 5,428 and 2,589.28

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Solution

The fourth proportional to 3,936.08, 5,428 and 2,589.28 is: 3,570.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.08 : 5,428 = 2,589.28 : x
  2. Step 2: Convert to fraction form
    3,936.08/5,428 = 2,589.28/x
  3. Step 3: Cross multiply
    3,936.08x = 5,428 × 2,589.28
  4. Step 4: Simplify right side
    3,936.08x = 14,054,611.84
  5. Step 5: Solve for x
    x = 14,054,611.84/3,936.08
  6. Step 6: Final answer
    x = 3,570.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.